Mapei 39310 User guide

Brand: Mapei

Model: 39310

Type: User guide

Mapei 39310

Mapei 39310 is a siliconized acrylic caulk used to seal and fill joints in various construction applications, including:

Filling joints where tile abuts dissimilar surfaces
Caulking around sinks, tubs, showers, countertops, and ceramic tile floors
Restoring cracked or worn grout joints

Key features of Mapei 39310 include:

Easy-To-Use: Packaged in gun-grade tubes for easy application, water clean-up while fresh, comes ready to use.
Durable: Provides a flexible barrier/filler between horizontal and vertical surfaces to prevent cracked tile due to expansion, resists mold and mildew.

Mapei 39310

Mapei 39310 is a siliconized acrylic caulk used to seal and fill joints in various construction applications, including:

Filling joints where tile abuts dissimilar surfaces
Caulking around sinks, tubs, showers, countertops, and ceramic tile floors
Restoring cracked or worn grout joints

Key features of Mapei 39310 include:

Easy-To-Use: Packaged in gun-grade tubes for easy application, water clean-up while fresh, comes ready to use.
Durable: Provides a flexible barrier/filler between horizontal and vertical surfaces to prevent cracked tile due to expansion, resists mold and mildew.

DESCRIPTION

Keracaulk S (sanded) and Keracaulk U (unsanded) are premium-grade, easy-to-

use, easy-to-clean siliconized acrylic caulks formulated to match all of MAPEI's

grout colors.

FEATURES AND BENEFITS

• Water cleanup while fresh

• Paintable

• BioBlock

technology for mold and mildew resistance

• Packaged in gun-grade tubes for easy application

• VOC-compliant

INDUSTRY STANDARDS AND APPROVALS

• ASTM: Meets C834 for low-movement sealant

LEED v3 Points Contribution LEED Points

MR Credit 5, Regional Materials* .......................................Up to 2 points

IEQ Credit 4.1, Low-Emitting Materials –

Adhesives & Sealants ..................................................................1 point

IEQ Credit 4.3, Low-Emitting Materials – Flooring Systems .............1 point

* Using this product may help contribute to LEED certification of projects in the

categories shown above. Points are awarded based on contributions of all

project materials.

WHERE TO USE

• For gaps up to 1/4" (6 mm)

• As a flexible barrier/filler between horizontal and vertical surfaces to prevent

cracked tile due to expansion

• For filling joints where tile abuts dissimilar surfaces

• For caulking around sinks, tubs, showers, countertops and ceramic tile floors

• For interior use only

• For restoring cracked or worn grout joints

LIMITATIONS

• Do not install over substrates containing asbestos.

• The application temperature range is 50°F to 90°F (10°C to 32°C).

• Apply only to clean, dry surfaces.

• For both Keracaulk S and Keracaulk U, joints should not exceed 1/4" (6 mm)

in width.

• Do not use for exterior projects or applications subject to constant water

immersion.

• Do not use in areas where joints will be subject to heavy abrasion or wear.

• Allow new concrete to cure for 30 days before caulking.

• Although Keracaulk S and Keracaulk U are color-matched to MAPEI’s

grouts, expect a slight variation in color due to the difference in composition

between materials.

• For applications beyond 1/4" (6 mm) in depth, the caulking depth must

be controlled by a closed-cell backer rod.

• To ensure product effectiveness, do not apply Keracaulk S or Keracaulk U

thinly, as with a paint.

• Keracaulk S and Keracaulk U may stain porous materials. Test on a separate

area before final application.

• Refer to the project's ASTM requirements before commercial use of

Keracaulk S and Keracaulk U.

Premium, Sanded and

Unsanded Siliconized

Acrylic Caulks

racaul

Keracaulk

racaul

Keracaulk U

Version: June 2, 2016

We proudly support the following industry organizations:

MAPEI Headquarters of the Americas

1144 East Newport Center Drive

Deerfield Beach, Florida 33442

1-888-US-MAPEI (1-888-876-2734) /

(954) 246-8888

Technical Services

1-800-992-6273 (U.S. and Puerto Rico)

1-800-361-9309 (Canada)

Customer Service

1-800-42-MAPEI (1-800-426-2734)

Services in Mexico

0-1-800-MX-MAPEI (0-1-800-696-2734)

Edition Date: May 24, 2016

PR: 4127 MKT: 16-1548

For the most current BEST-BACKED

product data and warranty information, visit www.mapei.com.

SURFACE PREPARATION

• Surfaces must be structurally sound, stable, clean and free from dust, oil,

grease, paint, gypsum patch, flooring adhesive, tar, wax, sealers, curing

compounds, form release agents, laitance, loose particles and foreign

substances that could reduce or impair adhesion.

• Remove all traces of paint, loose particles, residue and cement particles

by mechanical means.

• Remove mildew by scrubbing with a mixture of 4 U.S. oz. (118 mL) of

trisodium phosphate (TSP), 1 U.S. qt. (946 mL) of liquid bleach and 3 U.S.

qts. (2,84 L) of warm water. Protect eyes and hands by wearing goggles and

water/chemical-resistant gloves. Thoroughly rinse and allow surface to dry

completely before caulking and painting.

• Vacuum out joints and wipe them clean with a damp rag.

Consult MAPEI’s Technical Services Department for installation recommendations

regarding substrates and conditions not listed.

PRODUCT APPLICATION

Read all installation instructions thoroughly before installation.

1. Tile should be firmly set before caulking. Typically, this is 24 to 48 hours

after tile installation.

2. Caulking may be done either before or after grouting.

3. For a clean, straight and neat caulk joint, mask both sides of the joint with

masking tape.

4. Keracaulk S and Keracaulk U come ready to use. Apply with a caulking

gun. Do not open cartridges until preparatory work has been completed.

5. Cut the nozzle tip to the desired bead size at a 45-degree angle.

6. Completely fill joints with sealant and smooth over with a wet, gloved

finger.

7. Excess caulk should be removed with a damp cloth before the caulk skins

over.

8. Immediately wash hands and tools with warm water and soap.

PROTECTION

1. Allow 24 hours of drying time before painting.

2. Protect from water exposure until fully cured for at least 72 hours.

Note: Large beads of caulk and cool, humid conditions will require a longer

drying time.

Refer to the SDS for specific data related to health and safety as well as product

handling.

STATEMENT OF RESPONSIBILITY

Before using, user shall determine the suitability of the product for its intended

use and user alone assumes all risks and liability whatsoever in connection

therewith. ANY CLAIM SHALL BE DEEMED WAIVED UNLESS MADE

IN WRITING TO US WITHIN FIFTEEN (15) DAYS FROM DATE IT WAS,

OR REASONABLY SHOULD HAVE BEEN, DISCOVERED.

Shelf Life and Product Characteristics*

at 73°F (23°C) and 50% relative humidity

Drying time 24 to 48 hours

Shelf life

2 years when stored in original, unopened

packaging

VOCs (Rule #1168 of

California's SCAQMD)

< 25 g per L

Colors

Available in MAPEI's palette of 40 colors (plus

Clear for Keracaulk U only), organized into 5

color collections. Refer to MAPEI's grout/caulk

color chart. Sample color chips are available

upon request.

* Cold temperature or high humidity may alter these properties.

Packaging

Size

Keracaulk S: 10.5 U.S. oz. (311 mL) tube

Keracaulk U: 10.5 U.S. oz. (311 mL) tube

Approximate Coverage** per 10.5 U.S. oz. (311 mL)

Joint Size Coverage

1/16" (1,5 mm) 48 to 50 lin. ft. (14,6 to 15,2 m)

1/8" (3 mm) 24 to 25 lin. ft. (7,32 to 7,62 m)

3/16" (4,5 mm) 15 to 17 lin. ft. (4,57 to 5,18 m)

1/4" (6 mm) 11 to 13 lin. ft. (3,35 to 3,96 m)

** Coverages shown are for estimating purposes only. Actual jobsite coverages

may vary depending on the joint size and application procedures.

Mapei 39310 User guide

Brand: Mapei

Model: 39310

Type: User guide

Mapei 39310

Mapei 39310 is a siliconized acrylic caulk used to seal and fill joints in various construction applications, including:

Filling joints where tile abuts dissimilar surfaces
Caulking around sinks, tubs, showers, countertops, and ceramic tile floors
Restoring cracked or worn grout joints

Key features of Mapei 39310 include:

Easy-To-Use: Packaged in gun-grade tubes for easy application, water clean-up while fresh, comes ready to use.
Durable: Provides a flexible barrier/filler between horizontal and vertical surfaces to prevent cracked tile due to expansion, resists mold and mildew.

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Mapei 39310 User guide

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